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Oracle fixes Java flaw after Homeland Security warning

NEW YORK — Oracle fixed a security flaw in its Java software Sunday after the Department of Homeland Security warned computer users to disable the software completely, citing a loophole that allows hackers to take control of their machines.

‘‘Java 7 Update 10 and earlier contain an unspecified vulnerability that can allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system,’’ the agency said in an alert. ‘‘This and previous Java vulnerabilities have been widely targeted by attackers, and new Java vulnerabilities are likely to be discovered.’’

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